钛合金Ti6Al4V表面离子注入铜的阻燃性研究  

Laser Ablative Characterization of Fire Resistance for the Titanium Alloy Ti6Al4V Surface by Ion Implanted Copper

作　　者：汪阳 张高会 汪凯 杨镕菲 李想 孙启轩 WANG Yang;ZHANG Gao-hui;WANG Kai;YANG Rong-fei;LI Xiang;SUN Qi-xuan(College of Sciences,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量大学理学院,浙江杭州310018

出　　处：《真空》2021年第5期98-103,共6页Vacuum

摘　　要：针对钛合金在一定条件下易发生钛火的问题,对钛合金的阻燃性能进行优化研究。在Ti6Al4V表面进行离子注铜,采用金相显微镜对表面形貌进行观察和分析,使用X射线衍射仪分析改性层中的物相组成,利用飞秒激光烧蚀研究阻燃性能,并用扫描电子显微镜对烧蚀区域的形貌与成分进行分析。注铜处理后Ti6Al4V表面形成了含有Ti_(2)Cu合金相的改性层,但仍能观察到表面划痕存在,说明注铜形成的改性层很薄,样品微观形貌没有明显改变;对样品进行激光烧蚀,烧蚀处理后Ti6Al4V样品烧蚀孔洞内没有发现Cu元素,烧蚀孔洞周边区域存在Cu元素,烧蚀斑痕的面积较未处理前的2.39×10^(4)μm^(2)减小至1.68×10^(4)μm^(2),根据改性层中存在Ti_(2)Cu合金相,以及Ti-Cu合金相在融化时能够吸收大量的热量的原理,说明改性层具有阻燃效果。随着离子注入能量与剂量的增加,阻燃效果更加明显。Aiming at the problem that titanium alloys are prone to fire under certain conditions,the fire resistance of titanium alloys was optimized.Ion implanted copper was carried out on the surface of Ti6 Al4 V,then the surface morphology was observed and analyzed by metallographic microscope,the phase composition of the implantation layer was analyzed by X-ray diffraction,the flame retardancy was studied by femtosecond laser ablation,and the morphology and composition of the ablation area were analyzed by scanning electron microscope.The injection layer containing Ti_(2)Cu alloy phase was formed on the surface of Ti6 Al4 V,and its microstructure was not significantly changed.Laser ablation of the sample,there is no Cu element in the ablation hole of the Ti6 Al4 V sample after treatment,Cu element exists in the surrounding area,and the area of ablation stain is reduced from2.39×10^(4)μm^(2)to 1.68×10^(4)μm^(2)compared with the untreated Ti6 Al4 V.It indicates that the injection layer formed by copper injection is very thin and has flame retardant effect.With increase of energy and dose,the flame retardant effect becomes more obvious.

关 键 词：钛合金 离子注入 铜 阻燃 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG174.445[金属学及工艺—金属材料]